Home / 28,399.48-42,599.45-8,678.41

Finding the Fourth Proportional to 28,399.48, 42,599.45 and 8,678.41

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Solution

The fourth proportional to 28,399.48, 42,599.45 and 8,678.41 is: 13,017.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.48 : 42,599.45 = 8,678.41 : x
  2. Step 2: Convert to fraction form
    28,399.48/42,599.45 = 8,678.41/x
  3. Step 3: Cross multiply
    28,399.48x = 42,599.45 × 8,678.41
  4. Step 4: Simplify right side
    28,399.48x = 369,695,408.07
  5. Step 5: Solve for x
    x = 369,695,408.07/28,399.48
  6. Step 6: Final answer
    x = 13,017.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.